MCM4
a mini-chromosome maintenance protein, essential for the initiation of eukaryotic genome replication. The MCM hexameric protein complex is a key component of the pre-replication complex. The complex consisting of this protein and MCM2, 6 and 7 possesses DNA helicase activity. Phosphorylation by CDC2 reduces the DNA helicase activity and chromatin binding of the complex. Note: This description may include information from UniProtKB.

SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.